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Coiled Tube Drilling Bottom Hole Assembly Having Wireless Power And Data Connection

a bottom hole assembly and wireless technology, applied in the direction of directional drilling, borehole/well accessories, survey, etc., can solve the problems of existing ctd solutions that existing solutions have failed to leverage the existing coil tubing rigs and improve the cost and performance of ctd drilling operations, and existing solutions have significant limitations and/or fail to address key segments of the mark

Inactive Publication Date: 2014-03-27
SCHLUMBERGER TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes methods and systems for transmitting power and data in a drilling assembly. One system involves a drilling assembly with an inner and outer cylindrical coil that rotate or move to transmit power or data. Another embodiment is a bottom hole assembly for coiled tube drilling with a measuring-while-drilling (MWD) module and a wireless power and data connection between the MWD module and the drilling motor. This technology allows for wireless communication between the MWD module and the drilling motor, providing power and data connectivity. Overall, this patent presents concepts for improving wireless communication in drilling assemblies.

Problems solved by technology

Although the market for CTD systems and applications has grown in recent years, existing downhole drilling bottom hole assemblies (BHAs) have largely failed to leverage the existing coil tubing rigs and improve the cost and performance of CTD drilling operations.
Existing CTD solutions have significant limitations and / or fail to address key segments of the market.
Despite the growth of CTD systems, existing solutions have failed to leverage the existing coil tubing rigs and improve the cost and performance of CTD drilling operations.

Method used

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  • Coiled Tube Drilling Bottom Hole Assembly Having Wireless Power And Data Connection
  • Coiled Tube Drilling Bottom Hole Assembly Having Wireless Power And Data Connection
  • Coiled Tube Drilling Bottom Hole Assembly Having Wireless Power And Data Connection

Examples

Experimental program
Comparison scheme
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embodiment 230

[0058]Turning now to FIGS. 5A and 5B, a cross sectional view of two coils 232, 234 is illustrated in FIG. 5A and a side view of the two coils 232, 234 is illustrated in FIG. 5B. In these two figures, a receiving coil 232 inside a transmitting coil 234 of a particular embodiment 230 is depicted. The receiving coil 232 includes a ferrite rod core 235 that, in some embodiments, may be about 12.5 mm (about 0.49 inch) in diameter and about 96 mm (about 3.78 inches) long with about thirty-two turns of wire 237. Notably, although specific dimensions and / or quantities of various components may be offered in this description, it will be understood by one of ordinary skill in the art that the embodiments are not limited to the specific dimensions and / or quantities described herein.

[0059]Returning to FIG. 5, the transmitting coil 234 may include an insulating housing 236, about twenty-five turns of wire 239, and an outer shell of ferrite 238. The wall thickness of the ferrite shell 238 in the ...

embodiment 264

[0067]Turning to FIG. 13, AC power can be passed through the coils. Input AC power at frequency f1 is converted to resonant frequency f0 by a frequency convertor. Normally this would be a step up convertor with f0>>f1. The receiver circuit outputs power at frequency f0, which is converted back to AC power at frequency f1. Alternatively, as one of ordinary skill in the art recognizes, the FIG. 13 embodiment 264 could be modified to accept DC power in and produce AC power out, and vice versa.

[0068]In lieu of, or in addition to, passing power, data signals may be transferred from one coil to the other in certain embodiments by a variety of means. In the above example, power is transferred using an about 100.0 kHz oscillating magnetic field. It is envisioned that this oscillating signal may also be used as a carrier frequency with amplitude modulation, phase modulation, or frequency modulation used to transfer data from the transmitting coil to the receiving coil. Such would provide a o...

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Abstract

Various embodiments of methods and systems for providing wireless power and data communication in a drilling assembly. One embodiment includes a system for transmitting power or data communications in a drill string. The system includes a drilling assembly having an inner cylindrical coil located inside an outer cylindrical coil. The inner cylindrical coil is adapted to rotate with respect to the outer cylindrical coil, rotate around an axis of the outer cylindrical coil, or move axially with respect to the outer cylindrical coil.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of and priority to U.S. Provisional Patent Application Ser. No. 61 / 704,599, entitled “Coiled Tube Drilling Bore Hole Assembly With A Wireless Power and Data Connection,” and filed on Sep. 24, 2012, U.S. Provisional Patent Application Ser. No. 61 / 704,805, entitled “System And Method For Wireless Power And Data Transmission In A Mud Motor,” and filed on Sep. 24, 2012, and U.S. Provisional Patent Application Ser. No. 61 / 704,758, entitled “Positive Displacement Motor Rotary Steerable System And Apparatus,” and filed on Sep. 24, 2012, the disclosures of which are hereby incorporated by reference in their entireties.DESCRIPTION OF THE RELATED ART[0002]In preparing wells in drilling operations, boreholes are drilled to subterranean reservoirs, and those boreholes can be used for producing desired fluids, such as hydrocarbon-based fluids. The boreholes can be used for treatment and other applications. In many e...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B44/00E21B7/04
CPCE21B7/04E21B44/00E21B47/13
Inventor MORIARTY, KEITH A.GADOT, RAPHAELCLARK, BRIAN OLIVER
Owner SCHLUMBERGER TECH CORP